Julius buttermilch



(No Model) J. BUTTERMI-LCH.

RGLLBR SKATE.

No. 584,089. Patented June 8, 1897.

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AfrnNT J ULIUS BUTTERMILCII, 0F BERLIN, GERMANY.

ROLLER-SKATE.

SPECXFICATION forming part of Letters atent No. 584,089, dated J une 8,1897.

Application filed l'uly 23,1896. Serial Noi 600,272. (No modelf) To @ZZwhom may concern:

Beit known that I, JULrL's B orrnnnrncn, merchant, a subject of theGerman Emperor, residing at Berlin, in the German Empire, have inventedcertain new-and useful Improvements in Roller-Skates, of which thefollowing is a specification.

The present invention relates especially to an innovation in suchrollenskates which have two rollers in a line along the center of theskate.

Figure l of annexed drawings shows a side view of a completeroller-skate. Figs. 2, 3, 4, 6, and '7 show the attachment of therollerholders to the foot-plate, in which, according to Figs. 2, 3, and4l, an elastic cushion is used between the roller-holder and thefoot-plate. This is lacking in Figs. 6 and 7. Figs. 5, S, and 4: arcintended to explain the front rollerholder, which revolves on a verticalpivot fixed to the footplate and which can be fixed rigidly from theside of the same. This mobility is limited by means of striking-pegs.

The foot-plate a, Fig. l, which is fixedto the sole and heel ot' theshoe by means of a thumb-screw f and clamp device d d d2 e, is providedat the front and at the back with roller-holders l) 7L. As the hindroller is rigid, one can, in using an elastic cushion Z, Fig. 2, attachthe same between the foot-plate d and the roller-holder h, while theroller-holder h can be attached by means of the bolts c' to thefootplatc l in such a manner that the surface of the roller-holder h canyield on all sides to the pressure of the roller.

In using an elastic cushion 7c, Figs. 3 and et, for the frontroller-holders D the lower surface of the roller-holder is covered byametal plate b2, and this metal plate b2, as well as the cushion K, isattached. movably to the foot* plate a by inea-ns of the bolt t'. Apivot r,

Fig. 3, which is attached to the foot-plate c and which passes throughthe cushion le, as well as through. the plate h2, carries on its lowerend an adjustable roller-holder b.

For the purpose of limiting the rotation the roller-holder is providedon both sides with a peg n, Figs. 4 and 8, and the plate h2 has on bothsides two striking-pegs, so that the roller-holder b with. the peg n canonly turn to the right or left round the pivot r, Fig. 3, between thepegs fm fm., 5.

To obtain for fancy skates the intended mobility of the frontroller-holder Zi and, on the other hand, make the front roller-holderrigid for beginners, the roller-holder h, Fig. 7, is screwed fast to theplate h2 and to the foot-plate ci by means of the screws y', which passthrough the holes y, Figs. 3 and 6. The roller c or g has an elastictire attached to a hub S, Fig. 3. This hub has inthe center an oil-cupo, so that the balls, which by the inward pressure of the ball-bearinghalves t are maintained in the hub S, are constantly in contact with theoil contained in the oilcup o.

Asis shown by Fig. 3,the ball-bearin g halves t can be provided with acap p, which covers the neck of the hub S, thus preventing the dust fromentering into the ball-bearings or into the oil-cup. The elastic tire ofthe roller c g is made, as seen in Fig. 3, of rubber, and which isplaced over the V-shaped groove of the hub.

l claim- In combination, the foot-plate, the pivotstud extending downtherefrom, a wheelbracket pivoted on said stud and having lateralextensions,the plate b2 between the wheelbracket and the footeplate, thestops between the adjacent faces of the plate h2 and the wheel-bracket,said plate b2 having portions which together with the lateral extensionsof thc bracket are perforated so that by bringing said perforations intoalinement the wheelbrackets may be rigidly fixed by a screw or pin,substantially as described.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

J ULIUS BUTTERMILGH. Witnesses:

W. HAUPT,

HENRY Hasrnn.

